Mold.



B. SCHVERMA.

MOLD.

APPLIUATION FILED MALM, 1914.

Patented 0011. 6, 1914.

2 SHEETS-SHEET 1 omll.

@0i/memo -LITHO.. WASHINGTON, D. C.

B- SCHVBRMA.

MOLD.

APPLIoATIoN FILED MAR.24,1914.

1,1 1 3, l 42.` Patented Oct. 6, 1914.

2 SHEETS-SHEET 2.

29 w 2l 9 O 2@ 6 5 T8 l|Il ElEO l 33 @48 JIM rl a@ 24 I 2 i 2l i g Il \l 'Jwwmtoz @m1/wma Vf 3E E? 25 24 EiScHv EHMH, @WWK MW@ j I IWW/wu,

THE NDRRIS PETERS C0.. PHOTO-LITHO., WASHINGTON. D. C.

UNITED srnrnsrarnivr oFFioE. e

BOHUIVIIL SGHVERMA, OETWO RIVERS, WISCONSIN;

MOLD. j

To all whom it may concern: i

Be it known that I, BOHUMIL SGHVERMA, a citizen of the United States, residing at `Two Rivers, in the county of Manitowoc and State of "Wisconsin, have invented certain new and useful Improvements in Molds, of which thefollowing is a specification, reference beingliad tothe accompanying drawings.` i j This invention relates to an impro-ved mold and has for its primary object to produce a device of this character whereby building blocks` may Ibe` expeditiously rIhe invention has for a more particular object to provide a mold including side and end plates, and a simple yand novel frame structure to support saidplates in their erect positions and holdthe sameagainst moveinentby the pressure or' the plastic material upon the same, `said frame including a plurality of expansiblejsections, and means for expanding said sections whereby the frame may be removed. j e j `The invention has for ianother object to generally ziinprove and simplify the construction of molds of the above character, and to enable the `same to be produced ;at comparatively small manufacturing cost.

/Vith the above and otherl objects in viewj` as will become apparent as the description proceeds, the invention consists `in certain constructions, combinations and arrangements of" the parts that shall hereinafter fully `describe and claimg 1 i For a iull understanding` of the invention, i'ezterenceis to be had to the following description and accompanying drawings, e in wliich j i j `Figure 1 is a side elevation of a mold for building `.blocks constructed 1in accordance with my invention.` Fig.|2`is an end view thereof. Fig. 3 is a to `plan view. Fig. 4: is a section taken on the line 1 -430i `Fig. 3. Fie. 5 is a detailvertical section taken on the liie 5-5 of Fig. l. Fig. 6 is a horizontal section taken on the line 6-6 ofFig.` l;

Referring indetail `to the accompanying drawings, 5 designates theside plates of the ino-ld form and 6 the end platesthereof. These plates are adapted to `be arranged upon a suitable base or platform indicated at 7 to define a rectangular form. Eachof saidplates is provided upon its outer face Specification of Letters atent.

largements 22,

appear.

and adjacent each of itsfendswitha verti- Patented Oct. 6, 1914.` Application filed March 24, 1914.` Serial No. 526,933. i i

cally disposedcleat 8 provided adjacentits E upper end with a shoulder' 9.*To the inner sides olithe end plates G of the mold,"tlie substantially semi-cylindrical form `niembers `lO are secured.

A cylindrical -form member 1l is centrallyf arranged :upon the base between the semi-cylindrical end inem- `bers l0, said member preferablyconsisting ofcircular end blocks or `heads 12 connected bv a sheet metal cylinder 13. The block 12 in the upper end `of this form `member is f provided with acentral openingto receive j a plug 14, said block also having a second j opening `l5 extending` transversely therethrough. This blockll projects above the upper end ofthe sheet metal cylinder `,13

whereby the `same may be easily remove when `the plastic material has set.

lnoi'der to retain the several mold plates in their erect 1" positions, I have devised a very simple and novel construction of holding frame therefor.

This frame includes an j upper rectangular member `16.` `To the lonj bars ot this frame member, the expansible sections 17 and 18 respectively are hingedly `gitudinal"side barsand the transverse end connected along their upper edges as indicated at `19. `To the ends of'the upper bar` of each of these movable :trame sec-fl tions, the posts or uprights 20 are secured,` thelower ends thereof" being connected by the bars" 21. The ends oi these lower bars are formed "with rectangular plates orenformed therein. each of the uprights 2O on itsouter `face,

and these blocks `are provided in one of their e side races with obliquely inclined grooves 25, for a purpose which will; hereinafter To the ends of the upper `frame member ably mounted in theends of these bars and to the upper ends of said rods, the outer their `ends upon the standards 29 fixedupon end of the other lever.

each having an opening` 23" A block 24 `is secured to j `16, the transverse bars 26am rigidly se`- i cured. Vertically disposed rods 27 aremov` `the bars 2G, and oneiof said levers is prefer-1` i ablyfbifurcated as at 301 to receive the inner e A hand grip 81 is` mounted upon each of the bars 26 below )the engaged ends of the levers 28. The lower` ends of the vertically movable rods 27 are formed with enlargements 32. These enlargements are provided with integrally formed lugs or projections 33 which eXtend at right angles to each other and loosely engage in the grooves'25 formed in the contiguous blocks 24 on the end and side members respectively of the frame. The vertical rods 27 are connected and braced by means of the bars 34. It will be observed that the vrods 27 project below the enlargements 32 and are formed with tapering conical terminals 85 which are adapted to enter the coinciding openings 23 in the engaged plates 22 on the ends of the bars 2l, whereby said frame sections will be securely held against relative movement when the mold is set up in condition for use.

In the use of my improved mold, the side and end plates together with the form members are properly arranged upon the platform or base 7. vThe operator engages the palms of the hands upon the inner ends of the levers 28, and grasps the bars :3l with the fingers. By exerting a downward pressure upon the levers, it will be obvious that the rods 27 are thereby drawn upwardly and the lugs 33 moving in the groove 25 force the side and end sections of the frame outwardly so that said frame may be moved downwardly over the mold form. Upon the release of pressure upon the levers, the frame sections return to their normal positions, and engage against the vertical cleats 8 upon the ends of the mold plates. The upper rectangular frame member 16 rests upon the shoulders 9 formed upon thev upper ends of said cleats. The lower ends of the vertical rods 27 being engaged in the openings 23 effectually hold the frame sections against outward spreading movement when the plastic material is poured into the mold between the side and end plates therelof. After the cement or other materialfhas properly set, the outer expansible frame may be readily removed in the manner above stated and the side and end plates together with the mold forms removed from the molded structure. As shown in the accompanying drawings, it will be seen that the molded cement block is provided with a central opening and semi-circular grooves o-r channels in its end faces, so that when the blocks are assembled in a building wall, the same will form a plurality of air passages therethrough. The central cylindrical v mold form may be readily removed by disposing the plug l-l through the transverse opening l5 provided in the block l2 of said member. By grasping the ends of this plug i which project beyond the opposite sides of the mold member and turning said member, the same may be loosened from the plastic material.

From the foregoing description taken in connection with the accompanying drawing, it is believed that the construction, manner of operation and several advantages of my invention will be clearly and fully understood.

By the provision of the holding'frame for the mold plates, made up of a plurality of eXpansible sections, the molding of the building blocks may be greatly facilitated.

The device as a whole is very simple in its construction, highly durable and efficient in kpractical use and may beY manufactured for simultaneously moving said frame sec#` tions outwardly with respect to each other,

and means Aon said frame sections with` which said last named means Acooperates to lool; the frame sections againstsuch relative movement, in their applied positions.

2. In a mold, side and end'plates, a frame including a rectangular member, vmovable side and end sections mounted upon said member` to engage the respective mold plates, manually operable' means mounted upon said member and engaging means upon said frame sections to lock said sections against relative movement, and additional means upon said frame sections with which said manually.y operablemeans coperates to move said frame sections outwardly from the mold plates.

dln a mold, side and end plates, cleats' secured to the outer faces of said plates provided with shoulders at their upper ends, a frame including a rectangular member adapted to engage said shoulders, relatively movable frame sections mounted uponl said member for engagement with the respective mold plates, manually operable means mounted upon kthe ends of said frame member, and means carried by the yframe sections with which said manually operable means cooperates to movesaid frame` sections outwardly from the mold plates whereby the latter may be removed.

4. In a mold, side and end plates, cleats secured to the outer faces of said mold plates provided with shoulders upon their upper ends, a frame including a rectangular l member adapted to rest upon said shoulders, relatively movable frame sections opening,

hingedly mounted upon said member for engagement with the respectivemoldplates,` vertically movable rods mounted upon the corners of said rectangular member, blocks secured to the ends of each of said movable ramesections, each of said blocks being provided with an obliquelyinclined groove,

lugs on the lower` end ot" each of `said rods projectingatlright angles to, each other for engagement 1n the grooves oi contiguous blocks, and means for movingsaid rods to force the frame sections outwardly with respect to each other away `from the mold plates whereby the latter may be removed.

5. Ina mold, side and end plates, cleats secured to the outer faces of said plates and provided upon theirupper ends with `shoulders, a frame including a rectangular memy ber adapted to rest upon said shoulders, rel-` atively movable frame sections hingedly mounted upon said member for engagement with the respective mold plates, blocks secured upon the ends of each `of said frame sections, each block being provided `with an obliquely disposed groove therein, plates carried by the frame sections each having an the openings ini` the contiguous i plates registering `with eachjfother when the wardly with respect to eachother away from the mold plates whereby the latter may be removed. i

6. In a mold, side and end plates, a trame i member, clamping sections pivotally mounted? upon said frame `member `for swinging movement, and meanscarried by said frame member and coperatingwith said sections to swing the same into or` out of clamping engagement with the mold plates.

` 7. In a mold, a plurality of moldplates, a

frame including a body member, depending` frame sections `pivotally `mounted at `their upper edges upon said body member for swinging movement, manually operable means mounted upon the frame member `and coperating with said sections to swing the same into or out of clamping engagement with the respective mold plates, and means engaged by said last named meansto lock the frame sections in clamping engagement withthe mold plates. i f

8. In a mold, side and end plates, a 'frame including a `horizontally disposed member, depending frame sections mounted for swinging `movement upon" said body member, manually `operable means `mounted" upon the opposite ends of said body member and coperatingwith means on the contigf nous ends of said frame sections to swing said sections into or out of clamping engagement witlr the mold plates,and means adapted `to be engaged `by said last named `meansto lock said frame sections in clamp-` ing engagementwitb` the mold plates.

body c 65 y In testimony whereof Ihereunto aiX my `signature in the presence of two witnesses. y

y BoiiUMiL .y sciivERMA; y `IVitnesses: i i i A; P. SCHENIAN,

` -MABEL SCHENIAN;

Copies of this patent maybe obtained for five cents each, foy addressing `the Commissioner f Patents.

i Washington, D. CJ i i i l 

